# Interstitial

**CREATING CUSTOM EVENTS FOR WATERFALL**

1. Under the **Mediation** tab : Click on **Create Mediation group** section
2. Select **Android** and type of Ad format and Continue
3. In the Name field : Type in **ADSTER.TECH Interstitial**
4. Click on **Add ad units**
5. Select the app and the Ad units that you want to use custom targeting on.

**AD SOURCES (WATERFALL SECTION)**

1. Click on **Add Custom Event**
2. Name the label: Adster\_Inter\_10
3. Manual eCPM: Give 10 (in USD) as the value in the **ECPM -** this is a test setup pricing to ensure Ads from Adster adapter always come
4. Now Click on **Add Mapping**
5. You will see the adunit that you have selected before and Custom event with **Add Mapping**
6. **Mapping Name** : Adster\_Inter\_10
7. Class name should be <mark style="color:green;">`com.adster.ads.mediation.adapter.AdSterMediationAdapter`</mark> Ensure the class name is an exact match like in bold.
8. For the **Parameter** Pass the parameter provided by the Account Manager Eg:-

   ```json
   Example:
   {
     "placement_id": "adster_interstitial_test",
     "yield_group_bid_price_range": "10.0-10.0"
   }
   ```
9. Click on “**Save**” and save the configuration.
10. The actual number of entries, manual eCPM, etc. will be shared once the test setup is complete.

The above setup completes our **Adster.Tech x ADMOB** integration for **Interstitial Ads**. You should see an Ad like this if test setup is complete and working fine.

<figure><img src="/files/pWGXyhIaDyCmV5GSd3WA" alt=""><figcaption></figcaption></figure>

{% hint style="info" %}
Official Google Documentation for creating a custom event :\
[https://support.google.com/admob/answer/13407144](<https://support.google.com/admob/answer/13407144&#xA;>)
{% endhint %}


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